Koga Iga

His black hair is short, split into a pair of heavy bangs framing his face with one thick strand standing up at the back. He walks the Hero Festa floor in jeans and suspenders, and changes into a themed ninja outfit for the trap mansion.

Confidence is his defining trait, and he is proud of having it. He treats his future as settled: a ninja hero, working under Edgeshot from day one. His unnamed Quirk hardens his skin to the toughness of clay roofing tile, and he is proud of that too. Anyone he judges to be soft gets mocked for it, though the verdict is not permanent, and doing something impressive will change his mind.

The two boys meet when Katsuma Shimano walks into him on the convention floor and gets scooped up by his older sister, which Koga reads as proof the boy is a coward who needs looking after. They are paired again inside Edgeshot's trap house, where Katsuma flinches away from prop shuriken and takes another round of mockery, followed by Koga's announcement that he will be fighting alongside Edgeshot one day. Katsuma is impressed enough to try the obstacle course, and Koga vaults past him calling him slow.

He comes down hard on that jump and shrugs it off. Then a boulder trap starts rolling after them down a hallway, his ankle gives out, and he goes down with nothing left to run on. Katsuma, of all people, stops, finds a hidden door in the wall, and drags them both through it. Outside, with a recorded Edgeshot congratulating them on escaping, Katsuma uses Cell Activation to mend the ankle. Koga thanks him and tells him he was brave in the face of the rock, and the two agree to chase the same goal as friends.